Lithium Formate (HCOOLi, >99.95%) Powder as Electrolyte & Electrode Additive for Lithium-Ion Battery, 25-100 g/bottle, CLIBEALF

Electrolyte Interphase Role and Passivation Chemistry: When dissolved directly in non-aqueous electrolytes (or formed in situ): (1) Solubility Limits: HCOOLi has low solubility in pure linear carbonates (DMC, EMC) but exhibits moderate solubility in highly polar cyclic carbonates (EC, PC) or ether solvents. (2) Anode SEI Formation: In low dosages (<1 wt%) or via trace solubilization, formate anions undergo reductive breakdown at the anode interface (1.2–1.5 V vs. Li/Li+) to generate an organic/inorganic mixed interphase containingLi2CO3, lithium alkyl carbonates, and hydrocarbon fragments. (3) Electrode Cross-Talk & Parasitic Product: In high-nickel cathode systems (e.g., NCM811), HCOOLi is frequently observed as a parasitic degradation byproduct. Under high states of charge, reactive lattice oxygen chemically attacks carbonate solvents (EC), degrading them into formic acid and formaldehyde, which subsequently react with Li+ to precipitate HCOOLi on the electrode surfaces.